Assignee
CERWIN JOHN
7 granted patents·4 pending applications·125 citations·filing 2005–2025
Top patents by PatentIndex Score
11 records- 0194US7992311B2Rotary boring tool alignment and depth indication systemCERWIN JOHN·Filed 2009·Granted Aug 9, 2011·57 cites·10 claims
- 0292US7447565B2Electronic alignment systemCERWIN JOHN·Filed 2005·Granted Nov 4, 2008·56 cites·4 claims
- 0386US10739127B2Rotary boring tool alignment and depth indication toolsCERWIN JOHN·Filed 2018·Granted Aug 11, 2020·3 cites·13 claims
- 0474US11571753B1Rotary boring tool alignment device and systemCERWIN JOHN·Filed 2019·Granted Feb 7, 2023·1 cites·25 claims
- 0572US10150167B2Rotary boring tool alignment and depth indication systemCERWIN JOHN·Filed 2016·Granted Dec 11, 2018·4 cites·17 claims
- 0672US2026021537A1Devices for Attachment to Rotary ToolsCERWIN JOHN·Filed 2025·Application pending·0 cites
- 0765US7900368B2Train rail alignment and distance systemCERWIN JOHN·Filed 2009·Granted Mar 8, 2011·4 cites·10 claims
- 0852US2021205901A1Devices for Attachment to Rotary ToolsCERWIN JOHN·Filed 2020·Application pending·0 cites
- 0949US2023264339A1Visual alignment system for rotary boring toolsCERWIN JOHN·Filed 2021·Application pending·0 cites
- 1046US8069579B2Train rail alignment and distance systemCERWIN JOHN·Filed 2011·Granted Dec 6, 2011·0 cites·3 claims
- 1137US2007283587A1Angle measuring deviceCERWIN JOHN·Filed 2007·Application pending·0 cites
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